A few other smaller studies in Europe have led to similar findings, but experts say the research only establishes a correlation between coffee drinking and brain protection.
欧洲其他一些较小的研究也有类似的结果，但专家们说，研究结果只是说喝咖啡与脑保护有关系。
2
For decades researchers, child and animal protection professionals, and educators have been pointing to the correlation between the treatment of animals and the treatment of children.
十几年来，动物和儿童保护专家、教育学家都一直指出在对待动物和对待孩子之间有关联。
3
In this paper, the principle and performance of the new type of transient current differential protection based on correlation analysis are investigated.